Lights Out was an American old-time radio program featuring "tales of the
supernatural and the supernormal." It was immensely popular, and was one
of the first horror programs, predating Suspense and Inner Sanctum.
In its heydey, Lights Out rivalled the popularity of those shows. Lights
Out ran through several series and networks, from January 1, 1934 to August
6, 1947. The principal sponsor was Ironized Yeast. Most episodes were broadcast
at midnight. Lights Out then made the transition to television in 1949,
where it was broadcast until 1952.